Experimental Investigation of Anisotropy of the Strength Properties of the Sand-Polymer Casting Moulds, Which Were Manufactured in Accordance with the Method of the Layered Synthesis

摘要

As of today, rapid production (which is determined as the immediate manufacture of the finished products on the basis of the CAD data) is only the goal for the industry, but it is not a reality. However, use of the 3D printing technologies in order to manufacture casting moulds promisesto combine possibilities of the rapid prototyping with high processing capacity of the traditional production. As concerns metallurgical industry, the additive technologies (AT) are already successfully utilised for printing the sand-polymer casting moulds. Mechanical properties of the castingmoulds, which are printed with the help of these technologies, are not still investigated completely. Goal of this article is to investigate influence of various printing parameters (resolution capacity of printing, as well as position of the relevant object within the sphere of printing)upon the strength of the casting mould. In addition, authors of the article investigate dependency of anisotropy of the strength properties of the samples, which were printed with the help of the additive plant (in accordance with the method of the layered synthesis) from the resolution capacityof printing. Authors present results of various investigations of the strength characteristics of the samples, which were printed with the help of the additive plant: compression test, bending test, and tensile test. In addition, authors formulate recommendations concerning minimisation ofthe anisotropic behaviour through optimisation of adjustments of the 3D-printer.